#!/bin/bash ## docker-ports ## ## @author gdm85 ## script to show docker allocated ports of a container # if ! type jq >/dev/null 2>/dev/null; then echo "jq must be installed" 1>&2 exit 1 fi if [ $# -lt 1 ]; then echo "Please specify at least one container" 1>&2 exit 1 fi function show_ports() { local CID="$1" local CONTAINER_IPv4=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' $CID) || return $? if [[ -z "$CONTAINER_IPv4" || "$CONTAINER_IPv4" == "" ]]; then echo "Invalid container: $CID" 1>&2 return 1 fi local NAME=$(docker inspect --format '{{ .Name }}' $CID | awk '{ print substr($0, 2, length($0)-1) }') local STANZA="$(docker inspect --format '{{json .HostConfig.PortBindings }}' $CID)" || return $? echo "$NAME:" let I=0 for P in $(echo "$STANZA" | jq -M 'keys' | tail -n+2 | head -n-1 | sed s/,$// | sed 's/"//g' ); do ## port on container local SRCPORT="$(echo $P | awk -F/ '{ print $1 }')" echo -e -n "\t$SRCPORT\t<-\t" ## get port binding (if any) local SNIP=$(echo $STANZA | jq -M "to_entries | .[$I].value") if [[ -z "$SNIP" || "$SNIP" == "null" ]]; then echo "$CONTAINER_IPv4:$SRCPORT" else local HOSTIP="$(echo $SNIP | jq -M -r '.[0].HostIp')" ## match only bindings on dockerhost if [[ -z "$HOSTIP" || "$HOSTIP" == '0.0.0.0' ]]; then local HOSTPORT="$(echo $SNIP | jq -M -r '.[0].HostPort')" echo "0.0.0.0:$HOSTPORT" else echo "$HOSTIP:$SRCPORT" fi fi let I=I+1 done } for CID in $@; do show_ports "$CID" done